verse
056ccefa6acf
util/sasl/scram.lua

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util/sasl/scram.lua @ 363:056ccefa6acf

util.sasl.scram: Slight optimization of HMAC
author Kim Alvefur <zash@zash.se>
date Tue, 30 Sep 2014 12:16:33 +0200
parent 362:d8c3e94d765d
child 365:48bf6993b4c4
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equal deleted inserted replaced
362:d8c3e94d765d 363:056ccefa6acf
16 16
17 local function H(str) 17 local function H(str)
18 return crypto.digest("sha1", str, true); 18 return crypto.digest("sha1", str, true);
19 end 19 end
20 20
21 local _hmac_digest = crypto.hmac.digest;
21 local function HMAC(key, str) 22 local function HMAC(key, str)
22 return crypto.hmac.digest("sha1", str, key, true); 23 return _hmac_digest("sha1", str, key, true);
23 end 24 end
24 25
25 local function Hi(str, salt, i) 26 local function Hi(str, salt, i)
26 local U = HMAC(str, salt .. "\0\0\0\1"); 27 local U = HMAC(str, salt .. "\0\0\0\1");
27 local ret = U; 28 local ret = U;